The calculated distance (air line) between Thônex and Zürich (Kreis 6) is approximately 139 miles respectively 223 kilometers.
By car or train, the actual journey to Zürich (Kreis 6) is certainly longer, as only the direct route (as the crow flies) between Thônex and Zürich (Kreis 6) has been calculated here.
Air line (approximately)
223 kilometers
120 nautical miles